Converting Jokes

For all you engineers (and other geniuses) who have difficulty converting units....
1. Ratio of an igloo's circumference to its diameter? = Eskimo Pi
2. 2000 pounds of Chinese soup? = Won ton
3. 1 millionth of a mouthwash? = 1 microscope
4. Time between slipping on a peel and smacking the pavement? = 1 bananosecond
5. Weight an evangelist carries with God? = 1 billigram
6. Time it takes to sail 220 yards at 1 nautical mile per hour? = Knotfurlong
7. 16.5 feet in the Twilight Zone? = 1 Rod Serling
8. Half of a large intestine? = 1 semicolon
9. 1,000,000 aches? = 1 megahurtz
10. Basic unit of laryngitis? = 1 hoarsepower
11. Shortest distance between two jokes? = A straight line
12. 453.6 graham crackers? = 1 pound cake
13. 1 million-million microphones? = 1 megaphone
14. 2 million bicycles? = 2 megacycles
15. 365.25 days? = 1 unicycle
16. 2000 mockingbirds? = 2 kilomockingbirds
17. 52 cards? = 1 decacards
18. 1 more...

The following is supposedly a true story. To be included, besides being true, the story is most likely strange, weird, surprising, or funny.This last weekend I was reminded at the pace we are converting to metric. I was on I-75 in Ohio when I saw a sign that said:All signs metricNext 20 miles